Corrected entry: In the scene when they wake up after having had sex and slept beneath the grand piano. Fletcher wake's up banging his head on the piano. You can see he made the face show that he's getting hurt just before the sound of his head hitting the grand piano appears.

Correction:There is no way to know how thick the support of the piano is. Therefore, the sound could happen when he hits his head.

When Sophie and Alex are in the cafe the camera shows Alex from behind Sophie, and Sophie picks up a drink in the very next shot she has put it down. This happens throughout the scene in the cafe with her hands.